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Hyunyoung Song, Tovi Grossman, George Fitzmaurice, Azam Khan, Ramtin Attar, Gord Kurtenbach, François Guimbretière (2009)

PenLight: Combining a Mobile Projector and a Digital Pen for Dynamic Visual Overlay
CHI 2009 Conference proceedings:
ACM SIGCHI Conference on Human Factors in Computing Systems
pp. 143-152